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MobiHoc 2008 Panel New Architectures and Disruptive Technologies for the Future Wireless Networks. David B. Johnson Department of Computer Science Rice University dbj@cs.rice.edu. Mo bile N etworking Arch itectures. The Economist Magazine, June 20, 2002. Their disruptive technologies:
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MobiHoc 2008 PanelNew Architectures andDisruptive Technologies forthe Future Wireless Networks David B. Johnson Department of Computer ScienceRice University dbj@cs.rice.edu Mobile Networking Architectures
The Economist Magazine, June 20, 2002 Their disruptive technologies: • smart antennas • mesh networks • ad hoc architectures • ultra-wideband transmission
The Economist Magazine, June 20, 2002 • “Four disruptive technologies are emerging that promise to render not only the next wave of so-called 3G wireless networks irrelevant, but possibly even their 4G successors” • “Ad hoc networking will create more scope for‘mom and pop’ network operators and free community networks, all stitched together in a casual,ever-shifting web.”
The Economist Magazine, June 20, 2002 • “Network operators will still be needed to carrylong-haul traffic, but their role could become less (rather than more) important in future. In the process, the entire structure of the industry could shift from a top-down approach to one that is organised from the bottom up. There are already signs of this happening in the emerging area of commercial WI-FI networks, which allow individuals to club together to form a larger network.” One more technology: GPS / location availability
Ad Hoc Networking: The Future Many basic uses proposed, but dominated by: • Military applications, emergency/disaster relief • “Closed” (e.g., industrial) applications • “Casual” networking But what is the “killer application”? • I believe it’s like the Internet before the web was invented • Need a compelling application that everyone has to have and that will change the way we work and live And how do you enable commercial applications? • What is the business model? • What will people pay for? • What service level can you provide or guarantee?
Some Emerging New Application Areas Sensor networking: • Nodes are generally stationary • Long lifetime (power conservation) is most important Mesh networking: • Shared Internet access, neighborhood gaming,medical and emergency response, neighborhood watch, distributed backup, etc. • Route to nearest base station or to destination node Vehicular ad hoc networking (VANET): • Limited/predicable mobility, good power availability • QoS is important (emergency notification), traffic management, maybe general network access
A Few Open Problem Areas • Routing that includes robust handling of variable transmission modulation rates, variable power, asymmetric links, QoS, etc. • Remote network management and diagnosis • Robust and efficient security against route spoofing,denial of service, unfairness, etc. • Dynamic use of infrastructure when available, with fallback to disconnected operation • Support for infrastructure backup transit operation • Service level agreement for customers • Billing and/or commercial business model